12 volt water system will not shut off.

The solenoid that operates the 12v water pump will not shut off when any of the 3 water pump switches are engaged? The pump continues to run even after the water is turned off..I do not know where the pump soleniod is located.Is it on the end of the motor?
My odometer is digital,but it no longer works. The speedometer works fine? Is this a fuse problem ?

the vehicle is a1991 pace arrow motor home made by fleetwood